We have just released Symfony2 PR12. It only contains small bug fixes and
enhancements, but also a major security fix which allowed all users to switch
to arbitrary accounts when the
SwitchUserListener is activated
(configurations which do not use the
SwitchUserListener are not affected).
This is the last preview release as the form branch will be merged just after this release. As we will keep releasing one version per week, the first beta release of Symfony2 will be published next week.